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- <?php
- /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Vincent Petry <vincent@nextcloud.com>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
- */
- namespace OCA\DAV\SystemTag;
- use OCP\IUser;
- use OCP\SystemTag\ISystemTag;
- use OCP\SystemTag\ISystemTagManager;
- use OCP\SystemTag\ISystemTagObjectMapper;
- use OCP\SystemTag\TagNotFoundException;
- use Sabre\DAV\Exception\BadRequest;
- use Sabre\DAV\Exception\Forbidden;
- use Sabre\DAV\Exception\NotFound;
- use Sabre\DAV\Exception\PreconditionFailed;
- use Sabre\DAV\ICollection;
- /**
- * Collection containing tags by object id
- */
- class SystemTagsObjectMappingCollection implements ICollection {
- public function __construct(
- private string $objectId,
- private string $objectType,
- private IUser $user,
- private ISystemTagManager $tagManager,
- private ISystemTagObjectMapper $tagMapper,
- protected \Closure $childWriteAccessFunction,
- ) {
- }
- /**
- * @return void
- */
- public function createFile($name, $data = null) {
- $tagId = $name;
- try {
- $tags = $this->tagManager->getTagsByIds([$tagId]);
- $tag = current($tags);
- if (!$this->tagManager->canUserSeeTag($tag, $this->user)) {
- throw new PreconditionFailed('Tag with id ' . $tagId . ' does not exist, cannot assign');
- }
- if (!$this->tagManager->canUserAssignTag($tag, $this->user)) {
- throw new Forbidden('No permission to assign tag ' . $tagId);
- }
- $writeAccessFunction = $this->childWriteAccessFunction;
- if (!$writeAccessFunction($this->objectId)) {
- throw new Forbidden('No permission to assign tag to ' . $this->objectId);
- }
- $this->tagMapper->assignTags($this->objectId, $this->objectType, $tagId);
- } catch (TagNotFoundException $e) {
- throw new PreconditionFailed('Tag with id ' . $tagId . ' does not exist, cannot assign');
- }
- }
- /**
- * @return never
- */
- public function createDirectory($name) {
- throw new Forbidden('Permission denied to create collections');
- }
- /**
- * @return SystemTagMappingNode
- */
- public function getChild($tagName) {
- try {
- if ($this->tagMapper->haveTag([$this->objectId], $this->objectType, $tagName, true)) {
- $tag = $this->tagManager->getTagsByIds([$tagName]);
- $tag = current($tag);
- if ($this->tagManager->canUserSeeTag($tag, $this->user)) {
- return $this->makeNode($tag);
- }
- }
- throw new NotFound('Tag with id ' . $tagName . ' not present for object ' . $this->objectId);
- } catch (\InvalidArgumentException $e) {
- throw new BadRequest('Invalid tag id', 0, $e);
- } catch (TagNotFoundException $e) {
- throw new NotFound('Tag with id ' . $tagName . ' not found', 0, $e);
- }
- }
- /**
- * @return SystemTagMappingNode[]
- *
- * @psalm-return list<SystemTagMappingNode>
- */
- public function getChildren() {
- $tagIds = current($this->tagMapper->getTagIdsForObjects([$this->objectId], $this->objectType));
- if (empty($tagIds)) {
- return [];
- }
- $tags = $this->tagManager->getTagsByIds($tagIds);
- // filter out non-visible tags
- $tags = array_filter($tags, function ($tag) {
- return $this->tagManager->canUserSeeTag($tag, $this->user);
- });
- return array_values(array_map(function ($tag) {
- return $this->makeNode($tag);
- }, $tags));
- }
- public function childExists($tagId) {
- try {
- $result = $this->tagMapper->haveTag([$this->objectId], $this->objectType, $tagId, true);
- if ($result) {
- $tags = $this->tagManager->getTagsByIds([$tagId]);
- $tag = current($tags);
- if (!$this->tagManager->canUserSeeTag($tag, $this->user)) {
- return false;
- }
- }
- return $result;
- } catch (\InvalidArgumentException $e) {
- throw new BadRequest('Invalid tag id', 0, $e);
- } catch (TagNotFoundException $e) {
- return false;
- }
- }
- /**
- * @return never
- */
- public function delete() {
- throw new Forbidden('Permission denied to delete this collection');
- }
- public function getName() {
- return $this->objectId;
- }
- /**
- * @return never
- */
- public function setName($name) {
- throw new Forbidden('Permission denied to rename this collection');
- }
- /**
- * Returns the last modification time, as a unix timestamp
- *
- * @return null
- */
- public function getLastModified() {
- return null;
- }
- /**
- * Create a sabre node for the mapping of the
- * given system tag to the collection's object
- *
- * @param ISystemTag $tag
- *
- * @return SystemTagMappingNode
- */
- private function makeNode(ISystemTag $tag) {
- return new SystemTagMappingNode(
- $tag,
- $this->objectId,
- $this->objectType,
- $this->user,
- $this->tagManager,
- $this->tagMapper,
- $this->childWriteAccessFunction,
- );
- }
- }
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